:root {
    --bg: #ffffff;
    --ink: #000000;
    --muted: #777777;
    --side-pad: clamp(28px, 4vw, 64px);
    --bottom-pad: clamp(28px, 3.6vh, 56px);
    --tagline: clamp(13px, 0.95vw, 16px);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background-color: var(--bg);
    color: var(--ink);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, Arial, sans-serif;
    font-weight: 500;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body { min-height: 100vh; }

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.35s ease, opacity 0.35s ease;
}

img { display: block; max-width: 100%; height: auto; }

/* --- Preloader --- */
.preloader {
    position: fixed;
    inset: 0;
    background-color: var(--bg);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.65s ease;
}

.preloader--hidden { opacity: 0; pointer-events: none; }

.preloader__mark {
    width: 42px;
    height: 45px;
    opacity: 1;
    transition: opacity 0.35s ease;
}

.preloader__mark img { width: 100%; height: 100%; }

/* --- Page --- */
.page {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--bottom-pad) var(--side-pad);
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.9s ease, transform 0.9s ease;
}

.page--visible { opacity: 1; transform: none; }

/* --- Cover --- */
.cover {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-top: -3vh; /* визуально чуть выше геометрического центра — как в макете */
}

.cover__logo {
    display: block;
    height: auto;
}

/* Desktop SVG — горизонтальный, 845×90 */
.cover__logo--desktop {
    width: clamp(280px, 28.16vw, 540px);
}

/* Mobile SVG — скрыт на десктопе */
.cover__logo--mobile { display: none; }

.cover__tagline {
    margin: clamp(18px, 1.8vw, 28px) 0 0;
    font-size: var(--tagline);
    font-weight: 500;
    line-height: 1.45;
    color: var(--muted);
    letter-spacing: 0.005em;
}

/* --- Footer --- */
.footer {
    position: fixed;
    left: 0;
    right: 0;
    bottom: var(--bottom-pad);
    padding: 0 var(--side-pad);
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: none;
    z-index: 50;
}

.footer__email,
.footer__mark { pointer-events: auto; }

.footer__email {
    font-size: var(--tagline);
    font-weight: 500;
    color: var(--muted);
    letter-spacing: 0.005em;
}

.footer__email:hover { color: var(--ink); }

.footer__mark {
    display: inline-flex;
    align-items: center;
    width: clamp(20px, 1.6vw, 26px);
}

.footer__mark img { width: 100%; }

@media (prefers-reduced-motion: reduce) {
    .preloader,
    .preloader__mark,
    .page,
    a { transition: none; }
}